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in Class XI Maths by Premium (539 points)

In the expansion of (x + a)n, if the sum of odd term is denoted by 0 and the sum of even term by Then, prove that 

(i) O2 - E2 = (x2 - a2)n

(ii) 4OE = (x+a)2n -  (x-a)2n 

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In the expansion of (x + a)n, if the sum of odd term is denoted by 0 and the sum of even term by Then, prove that  

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